An acronym for the colours of the visible light spectrum:
Red
Orange
Yellow
Green
Blue
Indigo
Violet

Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.

An abreviation for the visible light spectrum, namely red, orange, yellow, green, blue, indigo, and violet.
In laymans terms, the colors of the rainbow.

Red
Orange
Yellow
Green
Blue
Indigo
Violet

A way to remember the colours of the rainbow. Red, Orange, Yellow, Green, Bue, Indigo and Violet.

Roy G Biv is a group of colors, which stands for:

R: Red
O: Orange
Y: Yellow

G: Green

B: Blue
I: Indigo
V: Violet

Euphemisms for homosexual. ROY G BIV is often used in the place of rainbow, and rainbows are a common symbol used by the homosexual community.